The component list of System76's Gazelle Professional laptop reads like a $1000+ ultrabook, a Core i7 4900MQ, 8GB of DDR3-1600, a 120GB Intel 520 SSD and 15.6-inch 1080p display. Instead of Windows it ships with Ubuntu 13.04, part of the reason you can purchase the base model for $830. Support for Haswell's HD Graphics 4600 is solid, with performance far beyond the old HD Graphics 3000; the Ivy Bridge GPU can sometimes outperform Haswell but that will change as drivers improve. Take a peek at the benchmarks in Phoronix's review.

"System76 recently sent over their Haswell-based Gazelle Professional laptop that sports HD Graphics 4600, a fancy Intel SSD, 8GB of system memory, and a beautiful HD display. This Haswell Linux laptop has already been used for testing within a few Phoronix articles while now is a full look at this Ubuntu laptop along with some comparison performance tests."